CLOCK(3) BSD Library Functions Manual CLOCK(3)NAMEclock — determine processor time used
SYNOPSIS
#include <sys/types.h>
clock_t
clock(void);
DESCRIPTION
The clock() function determines the amount of processor time used since
the invocation of the calling process, measured in CLK_TCKs.
RETURN VALUES
The clock() function returns the amount of time used unless an error
occurs, in which case the return value is -1.
SEE ALSOgetrusage(2)STANDARDS
The clock() function conforms to ANSI X3.159-1989 (“ANSI C89”).
BSD June 4, 1993 BSD